I changed my settings as you said and still received the error. Then I checked and there were other view modes where "none" was selected. I made sure all had something chosen. I am not getting the error any more.

I did go back and choose "none" again to test, but the error did not come back. Not complaining... just thought I'd point that out.

I also encountered this error message after uploading some images, used the Manage Items tabs to changes some titles, uploading more images… Got stuck at 24 images with correct offset, and no more offsets after that.